Variable-diameter rotating ring electrode

Abstract

The invention relates to the field of erosion-corrosion electrochemical monitoring, and particularly relates to a variable-diameter rotating ring electrode. The variable-diameter rotating ring electrode is provided with a metal rotating shaft, an insulating sleeve, a copper ball I, a spring, a copper ball II, an insulating layer I, a ring electrode, an insulating layer II and an insulating electrode sleeve, wherein the metal rotating shaft is composed of a part a and a part b, the part a of the metal rotating shaft is fixed in the insulating sleeve, the part b of the metal rotating shaft, the insulating layer I and the insulating layer II are all embedded into the insulating electrode sleeve together and fixed in the insulating electrode sleeve through screw threads, the ring electrode is embedded and fixed between the insulating layer I and the insulating layer II, and the part b of the metal rotating shaft props against and is connected with the inside surface of the ring electrode by virtue of the copper ball I, the spring and the copper ball II. By using the variable-diameter rotating ring electrode disclosed by the invention, a research sample is only acted and structured by a circumferential force in an erosion-corrosion test, and through embedding insulating seal layers of different sizes into the insulating electrode sleeve, the real-time measurement on electrochemical parameters for replacing rotating ring electrodes with different diameters is realized.

Description

technical field [0001] The invention relates to the field of electrochemical monitoring of erosion corrosion, in particular to a variable-diameter rotating ring electrode. Background technique [0002] At present, the electrochemical monitoring of erosion corrosion mostly uses rotating disk electrodes. Changing the rotation rate and the diameter of the disk electrode can establish a series of different peripheral velocities on the disk electrode, thereby realizing the real-time measurement of electrochemical parameters at different linear velocities on the electrode surface. . This test method has the advantages of simple operation, convenience, low price, small amount of test solution, and short test period. Although the rotating disk electrode has the advantages mentioned above, the rotating disk electrode technology cannot effectively realize the tangential force structure between the rotating sample and the stationary liquid, and in production practice, whether it is a ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a variable-diameter rotating ring electrode, which solves the problems in the prior art that cannot effectively realize the tangential force structure between rotating samples of different diameters and stationary liquid.

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